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Features many objects and even whole rooms in Wilhelminian style. Only accessible by guided tour (English tours can be arranged).
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A small castle in late classical style. It was built 1868 by Martin Gropius (uncle of the Bauhaus-founder and other architects, the von Siemens family changed the castle a bit around 1900 and they enlarged the dimensions of the park, which is today renovated and nice to wander around when the sun is shining. Located within a few minutes' walking distance from Biesdorf station (take the S5 from the city centre) or Elsterwerdaer Platz station (U5).
Before or after visiting the "Gardens of the World", tourists might be interested in climbing on top of the Kienberg (a small hill nearby with a view on the surrounding suburbs) or to go for a walk in the valley of the Wuhle (a small river). More information on the area can be found on the district's official website (in German).
Gärten der Welt
Inside you can find a large and well-established Chinese garden, a Korean garden, a small Bali garden/glasshouse, an Oriental garden with nice fountains and a cloister and a Japanese garden which is a project by the city partnership of Berlin and Tokyo. The latter has been built by Zen priests. Although quite crowded at times, there are not that many tourists so here's a chance to brush up on your German skills. As the journey to this park will be around an hour from the city center, don't miss this opportunity to complete your picture of Berlin by seeing some of Berlin's clean and quiet suburbs.
German-Russian Museum
In this house the surrender of Germany was signed on May 9th, 1945, ending WWII in Europe. This museum describes the history of the war between Germany and the Soviet Union between 1941 and 1945 and the GDR/German-Russian relationship ever since. Historic rooms, permanent exhibition and special exhibits.
The zoo in the former East Berlin is more spacious than its West Berlin counterpart, the historic Berlin Zoo and has been open for some 50 years. The Tierpark has nearly as many animals, but fewer reptiles and aquatic animals. It appears rather like a park with animals than a classic zoo, in fact it is one of the biggest zoos in Europe. There is an old castle from the late 17th century in the northeast of the Tierpark (Schloss Friedrichsfelde).